CN106165435B - The method, apparatus and server of client behaviour control in adaptive stream media - Google Patents

The method, apparatus and server of client behaviour control in adaptive stream media Download PDF

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Publication number
CN106165435B
CN106165435B CN201580016916.9A CN201580016916A CN106165435B CN 106165435 B CN106165435 B CN 106165435B CN 201580016916 A CN201580016916 A CN 201580016916A CN 106165435 B CN106165435 B CN 106165435B
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media content
content portion
relied
access
client device
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CN106165435A (en
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张少波
王新
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/762—Media network packet handling at the source 
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44218—Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44222—Analytics of user selections, e.g. selection of programs or purchase activity
    • H04N21/44224—Monitoring of user activity on external systems, e.g. Internet browsing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/812—Monomedia components thereof involving advertisement data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/85406—Content authoring involving a specific file format, e.g. MP4 format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Social Psychology (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

A kind of content source, it include: processor, for generating media presentation description (media presentation description, MPD) file, wherein dependence media content portion to be allocated is assigned at least one and is relied on media content portion by the MPD file, and the MPD file shows that media content portion will be relied on as described in client device access when meeting the access conditions for relying on media content portion；Transmitter is operatively coupled to the processor and for sending the MPD file at least one of content server, control server and described client device.

Description

The method, apparatus and server of client behaviour control in adaptive stream media
CROSS REFERENCE TO RELATED application
This application claims entitled " the mobile picture of coding and the views submitted on July 1st, 2014 by Zhang Shaobo et al. When frequency support HTTP dynamic self-adapting Streaming Media (Dynamic Adaptive Streaming over HTTP, DASH) in by Control method and system (the Method and System for Support of Controlled Playback in played Dynamic Adaptive Streaming over HTTP(DASH)When Coding Moving Pictures and Audio the priority of the 62/019th, No. 798 U.S. Provisional Patent Application) ", the full content of the earlier application is to quote Mode is incorporated herein.
About the statement by federal government's sponsored research or exploitation
It is not applicable.
With reference to microfiche appendix
It is not applicable.
Background technique
Media Content Provider or dealer, which can be used, is suitable for distinct device (for example, TV, laptop, desk-top Computer and cell phone) different encryptions and/or encoding scheme to subscriber or user distribute various media contents.Media content Provider can support media encoder and decoder (codec), media player, video frame rate, spatial resolution, Bit rate, video format or their combination.It is different to be suitble to that media content can be converted to various other statements from source statement Client device.In adaptive stream media, client device can be based on various factors, such as network condition, capacity of equipment and User's selection etc., the appropriate statement of dynamic select media content.Client device can also be inputted according to user in media content Each applicable concentration is selected, for example, enabling or disabling subtitle or selection language.
Summary of the invention
In one embodiment, the present invention includes content source, and the content source includes: processor, is in for generating media (media presentation description, MPD) file is now described, wherein the MPD file is by dependence to be allocated Media content portion is assigned at least one and is relied on media content portion, and the MPD file shows that the dependence ought be met Media content portion will be relied on when the access conditions of media content portion as described in client device access；Transmitter can operate It is coupled to the processor and for is sent out at least one of content server, control server and described client device in ground Send the MPD file.
In another embodiment, the present invention includes control server, and the control server includes: receiver, wherein The receiver is for receiving: one MPD file in content source, content server and client device, the MPD Dependence media content portion to be allocated is assigned at least one and is relied on media content portion, the MPD file table by file It is bright to be relied in media as described in the client device access when meeting the access conditions for relying on media content portion Hold part；One decision requests in the content server and the client device, and come from the client At least one access record of equipment；Processor is operatively coupled to memory and the transmitter, wherein the storage Device includes the computer executable instructions stored in non-transient computer-readable medium, so that the computer executable instructions The processor is set to receive the MPD file, the decision requests and described at least one when being executed by the processor After a access record, based on the MPD file, the decision requests and at least one described access record to the dependence matchmaker Hold whether part is made a policy by the client device access in vivo.
In another item embodiment, the present invention include it is a kind of by client device implement for controlling adaptive stream media In client behavior method, which comprises MPD file is received, wherein the MPD file is by dependence matchmaker to be allocated Appearance part is assigned at least one and is relied on media content portion in vivo, and the MPD file, which shows to work as, meets the dependence media When the access conditions of content part will as rely on media content portion described in Hu client device access；It is described receiving The connection with content server and control server is established after MPD file.
These and other feature will be better understood with following detailed descriptions in claim in conjunction with the accompanying drawings.
Detailed description of the invention
In order to thoroughly understand the present invention, said briefly below referring now to what is described in conjunction with the drawings and specific embodiments Bright, same reference numerals therein indicate same section.
Fig. 1 is the dynamic self-adapting Streaming Media (dynamic based on hypertext transfer protocol according to one embodiment of the invention Adaptive streaming over hypertext transfer protocol, DASH) schematic diagram.
Fig. 2 is the schematic diagram of an embodiment of network element (network element, NE).
Fig. 3 is the protocol figure for showing client behaviour control in adaptive stream media according to one embodiment of the invention.
Fig. 4 is the protocol figure for showing client behaviour control in adaptive stream media according to another embodiment of the present invention.
Fig. 5 is the process for showing the method for client behaviour control in adaptive stream media according to one embodiment of the invention Figure.
Specific embodiment
First it should be understood that disclosed is although the illustrative embodiment of one or more embodiments is provided below Any number of technology can be used to implement for system and/or method, and no matter the technology is currently known or existing.The present invention determines It should not necessarily be limited by illustrative embodiment described below, attached drawing and technology, exemplary set including illustrated and described herein Meter and embodiment, but can be modified in the scope of the appended claims and the full breadth of its equivalent.
Motion Picture Experts Group (Moving Picture Expert Group, MPEG) proposes for by network The multimedia dynamic based on hypertext transfer protocol (hypertext transfer protocol, HTTP) of self adaptation stream is certainly It adapts to Streaming Media (dynamic adaptive streaming over hypertext transfer protocol, DASH). It is International Organization for standardization (the International Organization of of the second edition of publication on December 1st, 2000 Standardization, ISO)/International Electrotechnical Commission (International Electrotechnical Commission, IEC) 13818-1, the entitled " universal coding of information technology-mobile image and pertinent audio information: system (Information Technology–Generic Coding of Moving Pictures and Associated Audio Information:Systems) " and the 5th edition ISO/IEC 23009-1 in publication on April 1st, 2012, name Referred to as " information technology-HTTP dynamic self-adapting Streaming Media-part 1: media presentation description and fragment format (Information Technology–Dynamic Adaptive Streaming over HTTP(DASH)–part 1: Media Presentation Description and Segment Formats) " in describe DASH agreement, this two parts Content is incorporated herein by reference.
When using DASH, Media Content Provider sends media presentation description (media to client according to request Presentation description, MPD) file.MPD file is a kind of extensible markup language (extensible Markup language, XML) document, media content is described as segment, wherein each in ISO/IEC 23009-1 Section is defined as the unit of data.MPD file also describes how that media content is presented to user using these segments.For example, MPD It can describe fractional time, segment multiplexing (for example, correlation between audio fragment and video clip time) and show can Obtain uniform resource locator (uniform resource locator, URL) information of the position of these segments.For example, logical The media content of overcurrent transmission may include several Media components (for example, audio, video and text), and each Media component has The different characteristics specified in MPD file.
Advertisement insertion in Streaming Media presentation has become the major source of revenues of Media Content Provider.Thereby it is ensured that objective It is critically important that family end equipment is presented advertisement together with Streaming Media.Ensure a kind of mode that advertisement is suitably presented be by using Digital copyright management (digital rights management, DRM) system.However, DRM system is in closed environment It realizes.Therefore, client device could be followed content by the trust of content server in the case where not modifying MPD file The instruction of server.On the contrary, DASH agreement is usually realized in open environment, wherein client device is in open environment The instruction of content server can not be followed, and can easily skip advertisement by modifying MPD file.
Disclosed herein is each embodiments of the client behaviour control in the self adaptation stream of media content.Media content is by each Media content portion composition, wherein each media content portion includes one or more segments, and can be relied on it is interior in vivo Hold part or relies on media content portion.In some examples, media content portion is relied on to depend on being relied on media content portion Point.The disclosed embodiments prevent at least part to be relied on media content portion (for example, advertisement, copyright statement, payment are logical Know or alert) it is skipped by client device.Content source into content server, client-server and control server extremely A few transmission MPD file.Dependence media content portion to be allocated is assigned at least one and is relied in media by MPD file Hold part, and indicates that media content will be relied on by client device access when meeting the access conditions for relying on media content portion Part.Access conditions can be related to each embodiment.In one embodiment, the access conditions for relying on media content portion shows permitting Perhaps before client device access relies on media content portion, client device has accessed at least one and has been relied on media content portion Point.In one embodiment, the access conditions for relying on media content portion shows that client device access is being allowed to rely on media Client device has accessed at least one a part for being relied on media content portion before content part.Control server receives At least one from client device is relied at least one access record of media content portion.It is receiving from client After end equipment or the decision requests of content server, control server is based on being relied on media content portion, MPD file and determine At least one access record of at least one of plan request formulates whether by client device access rely on media content portion Decision.In one embodiment, content server and control server are two separate servers.In one embodiment, content The function of server and control server merges in individual server.
Fig. 1 is the schematic diagram according to the DASH system 100 of one embodiment of the invention.DASH system 100 usually may include interior Appearance source 102, content server 104, network 106, one or more client devices 108 and control server 122.Implement one In example, content server 104, client device 108 and control server 122 can be communicated with each other by network 106, to exchange number According to, etc..In addition, content server 104 can be communicated directly with content source 102, as shown in the figure.In some examples, content takes Business device 104 receives MPD file and various media contents from content source 102.In one embodiment, DASH system 100 may be used also Including one or more additional content datas 102 and/or content server 104.It should be noted that term DASH is entirely being invented In use may include any adaptive stream media, such as HTTP live broadcast stream media (HTTP Live Streaming, HLS), micro- Soft smooth Streaming Media or Internet Information Service (Internet Information Services, IIS), and it is not limited to only table Show third generation affiliate (third generation partnership, 3GP)-DASH or MPEG-DASH.
Content source 102 is Media Content Provider or dealer, is suitable for distinct device (for example, TV, pen for using Remember this computer and/or mobile phone) different encryptions and/or encoding scheme subscriber or user be distributed to subscriber or user.It is interior Appearance source 102 for support media encoder and/or decoder (for example, codec), media player, video frame rate, Spatial resolution, bit rate, video format or their combination.Media content can be converted to various other from source or original statement Statement is to be suitble to different user.
Content server 104 passes through the suitable agreement of HTTP or another and one or more client devices 108 and control Server 122 communicates.Content server 104 is for storing media content (for example, being stored in memory or caching) and/or turning Send out media content segments.Each segment with multiple bit rates and/or can indicate to be encoded.In one embodiment, content service Device 104 includes server DASH module (DASH module, DM) 110, is used for through the suitable agreement hair of HTTP or another Send and receive data.In one embodiment, content server 104 includes network node, such as computer server or work station Deng.In one embodiment, content server 104 forms content distributing network (content delivery network, CDN) A part, this be based partially on distribution content purpose be deployed in multiple data centers by multiple backbone networks, wherein CDN can Refer to the distribution system of server.CDN may include one or more content servers 104.Although fig 1 illustrate that content server 104, but other servers, the server of such as former server, network server and/or any other suitable type can also Store media content.
Network 106 includes for passing through wired and/wireless channel in content server 104, client device 108 and control Any network of communication (for example, exchange of data) is provided between server 122.For example, network 106 can be internet or shifting Mobile phone network.
Client device 108 is any network node, for example, for being taken by the suitable agreement of HTTP or other and content The hardware device that business device 104 and control server 122 are communicated.Client device 108 can be laptop, plate electricity Brain, desktop computer, mobile phone or any other equipment.Client device 108 is for parsing MPD file to obtain about matchmaker The information held in vivo, such as the time of program, the availability of media content, medium type, resolution ratio, minimum and/or maximum belt Width, the presence of the optional version of various codings of Media component, the DRM of accessibility characteristic and needs, each Media component (example Such as, audio data fragment and video data segment) position and/or media content on network other feature.It such as will be under As face absolutely proves, client device 108 is also used to select media appropriate according to the information obtained from MPD file The encoded version of content, and pass through streaming media content by obtaining the media fragment being located on content server 104. Media fragment may include audio and/or visual sample from media content.
In one embodiment, client device 108 includes client DM 112, using 114 and graphic user interface (graphical user interface, GUI) 116.Client DM 112 be used for by HTTP and DASH agreement (for example, ISO/IEC 23009-1) send and receive data.Client DM 112 may include DASH access engine (DASH access Engine, DAE) 118 and media output (media output, ME) 120.DAE 118 can be configured to main component, for receiving Initial data from content server 104 (for example, server DM 110) and data are configured to a kind of convenient for checking Format.For example, DAE 118 can format the data of MPEG Container Format together with time data, then by formatting Data are output to ME 120.ME 120 be responsible for initialization, play and with the associated other functions of media content, and can will The media content is output to using 114.
In one embodiment, using 114 for web browser or with the interface for downloading and presenting media content Other application.It is coupled to GUI 116 using 114, so that can check and control application with the associated user of client device 108 114 various functions.In one embodiment, application 114 is a media player, which includes a searching bar, is made Character string can be inputted to search for the media contents such as film by obtaining user.It is shown using 114 and searches for list of matches, user can be from matching The desired media content of middle selection.After selection, instruction can be sent so as in downloads of media to client DM 112 using 114 Hold.112 media content download of client DM simultaneously handles media content to be output to using 114.For example, can be to GUI using 114 116 provide instruction so that the progress bar of the time schedule of display media content is presented in GUI 116.GUI 116 can be for for showing Show any GUI using 114 function, so that user can operate using 114.As it appears from the above, GUI 116 can be shown using 114 Various functions so that user may be selected the content to be downloaded.Then GUI 116 can show that media content is checked so as to user.
Control server 122 passes through HTTP or another proper protocol and content server 104 and one or more clients Equipment 108 is communicated the exchange of data (for example, allow), and for providing license to content server 104, with to client Equipment 108 sends media content.In one embodiment, control server 122 includes server DM 124, is used to pass through HTTP Send and receive data.Server DM 124 is similar to server DM 110.Control server 122 can be any network section Point, such as computer server or work station.In one embodiment, control server 122 can form a part of CDN, Middle CDN includes multiple control servers 122.Although content server 104 and control server 122 are shown as independent clothes in Fig. 1 Business device, but in certain embodiments, content server 104 and control server 122 can be merged into individual server.
Fig. 2 is the schematic diagram of the embodiment of network element (network element, NE) 200.NE 200 is applicable to realize Disclosed embodiment.For example, NE 200 can transmit data and its segment to pass through the transmission of network, system and/or domain or assistance Any equipment (for example, modem, interchanger, router, bridge, server, client, controller etc.).For example, NE 200 can and/or be integrated in content server 104, client device 108 and control server 122.NE 200 It is coupled to the inbound port 210 of receiver 212 (Rx) including one or more, wherein inbound port 210 comes from other nets for receiving The MPD file and/or segment of network component.NE 200 further includes the exit port that one or more is coupled to receiver 232 (Tx) 230, wherein exit port 230 is used to send MPD file and/or segment to other network components.NE 200 further includes logic unit Or processor 220, it is coupled to receiver 212 and is used to handle segment or determines which network components to send segment.
The combination of hardware or hardware and software can be used to implement in processor 220.It is one or more that processor 220 is implementable A central processing unit (central processor unit, CPU) chip, core (for example, multi-core processor), field programmable gate Array (field-programmable gate array, FPGA), specific integrated circuit (application specific Integrated circuit, ASIC) and/or digital signal processor (digital signal processor, DSP).Place Reason device 220 can be used for implementing media player 221 or any functional component known to persons of ordinary skill in the art or they Any combination.Media player 221 can be the application run on processor 220 and be used to play decoded media piece Section.
NE 200 may also include at least one processor 222.Memory 222 can be it is volatibility and non-volatile, And can be read-only memory (read-only memory, ROM), random access memory (random-access memory, RAM), three-state content addressing memory (ternary content-addressable memory, TCAM) and static random are deposited Access to memory (static random-access memory, SRAM).Memory 222 can be used for storing MPD file 223 and piece Section 224.MPD file 223 and segment 224 can be as described below the storage of various formats or encapsulation.As shown in Fig. 2, 224 He of segment MPD file 223 is stored as individual files, but they can also be stored in single file.In fact, may be present by NE 200 The bidirectional traffics of reason, therefore certain port can send and receive message (for example, segment) simultaneously.For from this layer of meaning, enter The different function for being coupled to the identical port of transceiver (Rx/Tx) can be set altogether or be can be considered to port 210 and exit port 230.
It is appreciated that by programming and/or executable instruction is loaded into NE 200, thus it is possible to vary processor 220 and deposit At least one of reservoir 222.Therefore, NE 200 can be partially converted to specific machine or device (for example, having the present invention to advocate Function network router).Executable instruction is storable on memory 222 and is loaded into processor 220 to execute.
Loading the function that executable software to computer is realized can be converted into firmly by well-known design rule Part is implemented, this is very basic in power engineering and field of software engineering.Decision implements one using software or hardware generally The considerations of generally depending on design stability and element number to be produced is read, rather than is converted from software field to hardware art Involved in any problem.In general, the design still frequently changed can preferentially be implemented in software, because rewriting hardware It is more expensive that embodiment ratio rewrites software design.In general, the design stablized and be mass produced is more suitable for for example Implement in software as ASIC, because the large-scale production that operation hardware is implemented is more cheaper than software implementation.Design is usual It can be developed and be tested in a software form, it is medium to be transformed into specific integrated circuit by well-known design rule later Same hardware is implemented, which stands fast at the instruction of software.In the same way, it is by the machine that new ASIC is controlled A kind of specific machine or device, similarly, the computer for programming and/or being loaded with executable instruction can be considered specific machine Or device.
Any processing of the invention can by make processor (for example, general multi-core processor) execute computer program come Implement.In which case it is possible to use any kind of non-transient computer-readable medium is to computer or the network equipment Computer program product is provided.Computer program product is storable in the non-transient computer in computer or the network equipment can It reads in medium.Non-transient computer-readable medium includes any kind of actual stored medium.Non-transient is computer-readable The example of medium includes magnetic-based storage media (for example, floppy disk, disk, hard disk drive etc.), optomagnetic storage medium (for example, magnetic CD), CD-ROM (compact disc read-only memory, CD-ROM), compact disc recordable (compact disc Recordable, CD-R), compact disc-rewritable (compact disc rewritable, CD-R/W), digital versatile disc (digital versatile disc, DVD), blue light (registered trademark) CD (Blu-ray disc, BD) and semiconductor are deposited Reservoir (for example, masking ROM, programming ROM (programmable ROM, PROM), erasable PROM, flash ROM and RAM).Any kind of instantaneity computer-readable medium can also be used to provide computer program to computer or the network equipment Product.The example of instantaneity computer-readable medium includes electric signal, optical signal and electromagnetic wave.Instantaneity computer-readable medium Program can be supplied to computer via wire communication line (for example, electric wire and optical fiber) or wireless communication line.
Fig. 3 is the protocol figure 300 for showing client behaviour control in adaptive stream media according to one embodiment of the invention. Client behaviour control in adaptive stream media shown in protocol figure 300 is implemented when user requests media streaming services.Client End behaviour control ensures to rely on media content portion when meeting the access conditions for relying on media content portion by client device 304 (for example, client devices 108) access.The access conditions for relying on media content portion is discussed in further detail below.From The client behaviour control adapted in Streaming Media can be implemented in DASH system 100.Protocol figure 300 shows 301 (example of content source Such as, content source 102), content server 302 (for example, content server 104), client device 304 is (for example, client device 108) message exchange between control server 306 (for example, control server 122).
Content source 301 is based on media content 309 and generates MPD file 307.MPD file 307 includes related adaptive stream media Media content 309 description.Media content 309 can be video, audio or text.Media content 309 includes media content Part, each media content portion include at least one segment.MPD file 307 is by dependence media content portion to be allocated It is assigned at least one and is relied on media content portion, and indicate when meeting the access conditions for relying on media content portion by visitor The access of family end equipment 304 relies on media content portion.
The access conditions for relying on media content portion is defined in MPD file, and access conditions may include various embodiments. In one embodiment, access conditions shows that client device 304 has accessed at least one and has been relied on media content portion, wherein It must be accessed before allowing client device 304 to access dependence media content portion and be relied on media content portion.For example, relying on Media content portion is 8 minutes Yoga video, which is assigned to by MPD file to be allocated is relied on media Content part, i.e. advertisement in 2 minutes.In this case, after client device 304 has accessed advertisement in 2 minutes, allow visitor Family end equipment 304 accesses 8 minutes Yoga videos.
In one embodiment, the access conditions for relying on media content portion shows that client device 304 has accessed at least one A predetermined portions for being relied on media content portion, then the access of client device 304 is allowed to rely on media content portion.For example, At least one predetermined portions for being relied on media content portion is the preceding 10 seconds parts for the advertisements in 2 minutes specified in MPD file. In this case, after client device 304 has accessed preceding 10 seconds parts of advertisement in 2 minutes, allow client device 304 Access 8 minutes Yoga videos.
Content source 301 is sent at least one of content server 302, client device 304 and control server 306 MPD file 307.In one embodiment, content source 301 is to content server 302, client device 304 and control server 306 All send MPD file 307.In one embodiment, content source 301 takes to content server 302, client device 304 and control A transmission MPD file 307 being engaged in device 306 then sends MPD file 307 to other servers again.MPD file 307 can It is transmitted by various types of data, for example, HTTP safety (HTTP secure, HTTPS), Email or general serial are total Line (universal serial bus, USB) driver is sent.Content source 301 also sends media to content server 302 Content 309.
Client device 304, which is established, connect 310 with the HTTP of content server 302 and control server 306.Client is set Standby 304 send the media content portion request 325 for media content portion to content server 302.In one embodiment, exist After receiving media content portion request 325, content server 302 sends decision requests 330 to control server 306, with Determine whether media content portion should be sent to client device 304 from content server 302.Control server 306 is according to MPD File 307 determines one that whether media content portion is that at least one is relied in media content portion.Work as control server 306 determine that media content portions are at least one when being relied on one in media content portion, and control server 306 is to content Server 302 sends the first decision 335, and expression allows to be relied on media content portion 337 and is sent to from content server 302 Client device 304.Then, content server 302 is relied on the every of media content portion 337 to the transmission of client device 304 A segment, to respond the first decision 335.The each segment and access for being relied on media content portion 337 record 339 1 startings It send.339 expression segment of access record is sent.Client device 304 is relied on the segment of media content portion 337 receiving The segment and access record 339 of media content portion 337 are relied on storage after access record 339.
In one embodiment, after receiving media content portion request 325, content server 302 is according to MPD text Part 307 determines whether media content portion is one be relied in media content portion.When content server 302 determines media When content part is one be relied in media content portion, content server 302 will be relied on media content portion 337 Each segment and access record 339 are sent to client device 304.Otherwise, content server 302 sends decision requests 330 To control server 306.
When media content portion is to rely on media content portion, control server 306 sends needle to client device 304 At least one access for being relied on media content portion for needing to prove to meet the access conditions for relying on media content portion is remembered The access record request 340 of record.Client device 304 sends the visitor requested in access record request 340 to control server 306 At least one of family end equipment is relied on all storages access record 345 of media content portion.
Control server 306 is based on making the second decision 350 from the received storage of client device 304 access record 345. It is recorded when recording 345 all access comprising requesting in access record request 340 from the received storage access of client device 304 When, meet the access conditions for relying on media content portion.Therefore, the second decision 350 allow by client device 304 access according to Rely media content portion.Then, control server 306 sends the second decision 350 to content server 302.Content server 302 The each segment for relying on media content portion 355 is sent, to client device 304 to respond the second decision 350.
But it is asked when not including in access record request 340 from the received storage of client device 304 access record 345 When all access record asked, or when not receiving storage access record from client device 304, it is unsatisfactory for relying on media The access conditions of content part.Therefore, the second decision 350 does not allow to rely on media content portion by client device access.So Afterwards, control server 306 sends the second decision 350 to content server 302.Therefore, content server 302 will not be to client Equipment 304, which is sent, relies on media content portion.Content server 302, client device 304 and control server 306 can more than Similar mode is stated to continue to exchange message.
Fig. 4 is the protocol figure for showing client behaviour control in adaptive stream media according to another embodiment of the present invention 400.Client behaviour control in adaptive stream media shown in protocol figure 400 requests media stream service to ensure to work as in user It is accessed when meeting the access conditions for relying on media content portion by client device 304 (for example, client device 108) and relies on matchmaker Implement when holding part in vivo.Client behaviour control in adaptive stream media can be implemented in DASH system 100.Protocol figure 400, which show content source 301 (for example, content source 102), content server 302 (for example, content server 104), client, sets Message exchange between standby 304 (for example, client devices 108) and control server 306 (for example, control server 122).
Unlike method described in protocol figure 300, establishing and content server 302 and control server 306 Connection 310 after, client device 304 determines the media content portion that requests from content server 302 according to MPD file 307 One for point whether being that at least one is relied in media content portion.When control server 304 determines that media content portion is When at least one is relied on one in media content portion, client device 304 sends the first decision to content server 302 335, it indicates to allow to be accessed by client device 304 to be relied on media content portion.Client device 304 is also to content server 302 transmissions are relied on media content portion request 410.In response to the first decision 335 and it is relied on media content portion request 410, content server 302 sends each segment for being relied on media content portion 337 and access record to client device 304 339。
When client device 304 determines that media content portion is to rely on media content portion, client device 304 is to control Control server 306 sends decision requests 330.Client device 304, which is also sent to control server 306, to be needed to judge to rely on media At least one of the access conditions of content part is relied on all storages access record 345 of media content portion.
Control server 306 is based on making the second decision 350 from the received storage of client device 304 access record 345. It proves to meet the access for relying on media content portion comprising needs when from the received storage access record 345 of client device 304 When at least one of condition is relied on all access record of media content portion, the second decision 350 allows by client device 304 access rely on media content portion.In one embodiment, then control server 306 sends second to client device 304 Decision 350.After receiving the second decision 350, client device 304 sends 350 He of the second decision to content server 302 Rely on media content portion request 420.Then, content server 302 sends to client device 304 and relies on media content portion 355 each segment with the second decision of response 350 and relies on media content portion request 420.In one embodiment, control clothes Business device 306 sends the second decision 350 to content server 302.It is receiving in the dependence media from client device 304 After holding component requests 420, control server 306 sends to client device 304 and relies on media content portion 355.
On the contrary, needing to prove to meet to rely on media when not including from the received storage of client device 304 access record 345 When all access record of the access conditions of content part, or the storage access note from client device 304 ought not be received When recording 345, the second decision 350 does not allow the access of client device 304 to rely on media content portion.Then, control server 306 send the second decision 350 to client device 304 or content server 302.Therefore, content server will not be to client Equipment, which is sent, relies on media content portion.Content server 302, client device 304 and control server 306 can be above-mentioned Similar mode continues to exchange message.
As described above, content server 302 and control server 306 are two separate servers.In an alternative implementation In example, the function of content server 302 and control server 306 merges in individual server.This specific embodiment is conducive to Eliminate the message exchange between content server 302 as described above and control server 306.
Fig. 5 is the method 500 for showing client behaviour control in adaptive stream media according to one embodiment of the invention Flow chart.When user requests media stream service to ensure to be set when meeting the access conditions for relying on media content portion by client When standby access relies on media content portion, method 500 is in client device (for example, client device 108 or client device 304) implement in.At step 510, MPD file is received.In one embodiment, from content source (for example, content source 102 or interior Appearance source 301), content server (for example, content server 104 or content server 302) and control server be (for example, control Server 122 or control server 306) in a reception MPD file.MPD file is by dependence media content portion to be allocated Point being assigned at least one is relied on media content portion.MPD file, which also indicates, is meeting the access for relying on media content portion Media content portion is relied on by client device access when condition.Access conditions can be related to each embodiment.In one embodiment, Rely on media content portion access conditions show allow client device access rely on media content portion before, client Equipment has accessed at least one and has been relied on media content portion.In one embodiment, the access item of media content portion is relied on Part shows: allow client device access rely on media content portion before, client device accessed at least one by according to Rely the predetermined portions of media content portion.At step 520, have been established with content server (for example, content server 104 or Content server 302) and control server (for example, control server 122 or control server 306) connection.
In MPD file, each element and attribute can be similar to those members defined in the 5th edition XML 1.0 in 2008 Element and attribute, content are herein incorporated by reference in this.MPD file may include provide flexible mechanism come explain the period, from Adapt to the descriptor of collection and statement.Each element may include one or more attributes, can be the category of further definition element Property.Attribute and element are distinguished by starting the symbol for "@".
The semanteme of table 1:EssentialProperty/SupplementalProperty descriptor
In one embodiment, the semanteme of descriptor is as shown in Table 1 above.Descriptor is assigned to media content portion, is EssentialProperty descriptor or SupplementalProperty descriptor.Descriptor can the period, adaptive set and Statement rank at most occurs once.
EssentialProperty descriptor indicates that element and attribute in EssentialProperty descriptor need Processing.SupplementalProperty descriptor illustrates that element and attribute in SupplementalProperty descriptor can Optimization processing is used for by client device, can also not need to handle.Assuming that the first descriptor, which is assigned to, relies on media content portion Point, the second descriptor, which is assigned to, is relied on media content portion.When dependence media content portion and it is relied on media content portion When all in same period, adaptive set or statement, the first descriptor and the second descriptor are that EssentialProperty is retouched State symbol.Otherwise, the first descriptor is EssentialProperty descriptor, and the second descriptor is SupplementalProperty descriptor.
Attribute "@schemeIdUri " specify uniform resource identifier (uniform resource identifier, URI) to identify control program.Particularly, when the value of attribute " schemeIdURI " be equal to " urn:mpeg:dash:cbc: When 2014 ", EssentialProperty or SupplementalProperty descriptor indicates client behaviour control scheme. Attribute "@controllerURL ", which specifies, is directed toward control server (for example, control server 122 or control server 306) HTTP URL.
Attribute "@cbc:controlType " specifies one in two Control Coolings of control server.When attribute " When the value of cbc:controlType " is equal to " strict ", whether control server determines each segment from content server (example Such as, content server 104 or content server 302) client device is sent to (for example, client device 108 or client are set For 304).When having sent a upper segment, allow to send segment by control server.But when attribute " cbc: When the value of controlType " is equal to " non-strict ", control server is determined when media content portion is to rely on media content Whether (that is, the value of attribute "@dependency " be equal to as described in Table 2 " dependent ") be from content server when part Client device is sent by media content portion (rather than each segment of media content portion).Under default situations, attribute The value of "@cbc:controlType " is " non-strict ".
Attribute "@cbc:NumAccessRecordRequired " specifies access record required for control server Data, to determine whether media content portion being sent to client device.When reception segment practical by client device, belong to Property "@cbc:timeMargin " specifies the acceptable time range in seconds about the reference time.Reference time Estimation segment is defined as by the client device received time.Daughter element " cbc:ContentRange " will be in table 2 further Detailed description.
In one embodiment, element " ContentRange Type " (that is, in table 1 daughter element " cbc: ContentRange ") semanteme as shown in table 2.Similar to table 1, element " ContentRange Type " is assigned to media content Part.Media content portion includes at least one segment.
Media content portion is assigned to and relies on media content portion (attribute "@by attribute "@dependency " The value of dependency " is equal to " dependent ") and be relied on media content portion (value of attribute "@dependency " is equal to " depended ") in one.When media content portion is designated as relying on media content portion, element " DependOnContent " should be added in table 2, which specify distribute to rely on media content portion at least one by according to Rely media content portion.
Attribute "@period " specifies the period, wherein defining media content portion in MPD file.Attribute "@ AdaptationSet " specifies adaptive set, wherein defining media content portion in MPD file.Attribute "@ Representation " specifies statement, wherein defining media content portion in MPD file.
Daughter element " Range " specifies one group of continuous segment and including sub- attribute "@startNum " and sub- attribute "@ length".Sub- attribute " startNum " specifies the index number of the first segment in one group of continuous fragment.Sub- attribute "@ Length " specifies the total number of segment in one group of continuous fragment.Daughter element " SegNumList " specifies one group discontinuous Section.
The semanteme of table 2:ContentRange type
Table 3 show can for the XML EssentialProperty write or The exemplary embodiment of the descriptor of SupplementalProperty descriptor.Those of ordinary skill in the art will understand that XML Coding.Exemplary embodiment in table 3 respectively defines element " ContentRange " (the 5th to 8 row), attribute "@ ControlType " (the 9th to 16 row), attribute "@controllerURL " (the 17th row), attribute "@ NumAccessRecordRequired " (the 18th row), attribute "@timeMargin " (the 19th row) and attribute "@dependency " (the 36th to 43 row).
Table 3: the exemplary embodiment of descriptor
Here is some exemplary MPD files write with XML, for illustrating that they are potential in certain use-cases Usage.Although describing three exemplary use cases (use-case 1 to 3 and table 4 to 6) in the present invention, it should be understood that this three A example is all non-limiting.
In use-case 1, it is relied on media content portion and dependence media content portion is defined in same period.Table 4 shows The exemplary embodiment of the exemplary MPD file with XML coding of use-case 1 is gone out.Row 6 describe " urn:mpeg:dash: The NameSpace of schema:cbc:2014cbc.xsd ", there is defined all properties and element.
Row 32 to 43 shows EssentialProperty descriptor, describes be relied on media content portion simultaneously With dependence media content portion.Row 33 to 36 determined respectively element " schemeIdUri ", element " cdc: ControllerURL ", element " cbc:controlType " and element " cbc:numberAccessRecordRequired " Value.Row 37 to 39 defines the dependence media content portion in period " OnlyOne ".Relying on media content portion includes 20 pieces Section, range is from 211 to 230.Row 40 to 42 defines and relies on the quilt in media content portion same period " OnlyOne " Rely on media content portion.Relying on media content portion includes 5 segments, and range is from 205 to 209.Rely on media content portion Divide and be relied on media content portion and is all defined in same adaptive set.According to row 25, identical adaptive set indicates view Frequently.
Table 4: with the exemplary embodiment of the XML MPD file write
In use-case 2, it is relied on media content portion and dependence media content portion is defined in different cycles.Table 5 shows The exemplary embodiment of the exemplary MPD file with XML coding of use-case 2 is gone out.Row 6 describe " urn:mpeg:dash: The NameSpace of schema:cbc:2014cbc.xsd ", there is defined all properties and element.
Row 46 to 49 shows SupplementalProperty descriptor, and which describe be relied on media content portion Point.Row 47 has determined the value of element " schemeIdUri ".Row 48 shows and is relied on media content defined in period " 42 " Part.
Row 75 to 81 shows EssentialProperty descriptor, and which describe rely on media content portion.Row 76 To 78 determined respectively element " schemeIdUri ", element " cdc:controllerURL " and element " cbc: The value of controlType "." row 79 to 80 shows and relies on media content portion defined in period " 43 ", and distributes to the period It is relied on media content portion in " 43 ", is expert in 46 to 49 and defines.
In use-case 3, the first dependence media content portion is assigned to first and is relied on media content portion.First relies on Media content portion and first is relied on media content portion and is defined in different cycles.Similar, second relies on media content Part is assigned to second and is relied on media content portion.Second dependence media content portion and second is relied on media content portion Divide and is defined in different cycles.Table 6 shows the exemplary embodiment for the MPD file of use-case 3 write with XML.
Row 48 to 51 shows the first SupplementalProperty descriptor, and which describe first to be relied on media Content part.Row 49 has determined the value of element " schemeIdUri ".Row 50 shows the first quilt defined in period " ad1 " Rely on media content portion.
Row 78 to 84 shows the first EssentialProperty descriptor, and which describe first to rely on media content Part.Row 79 to 81 determined respectively element " schemeIdUri ", element " cdc:controllerURL " and element " cbc: The value of controlType ".Row 82 to 83 shows the first dependence media content portion defined in period " 43 ", and distributes to First in period " ad1 " is relied on media content portion, is expert in 48 to 51 and defines.
Row 115 to 118 shows the first SupplementalProperty descriptor, and which describe second to be relied on matchmaker Hold part in vivo.Row 116 has determined the value of element " schemeIdUri ".Row 117, which is shown, is relied on media content portion in week Definition in phase " ad2 ".
Row 144 to 158 shows the 2nd EssentialProperty descriptor, and which describe second to rely in media Hold part.Row 145 to 148 has determined element " schemeIdUri ", element " cdc:controllerURL " and element respectively The value of " cbc:controlType ".Row 149 to 150 shows the second dependence media content portion defined in period " 45 ", and Second distributed in period " ad2 " is relied on media content portion, is expert in 115 to 118 and defines.
Table 5: with the exemplary embodiment of other MPD files of XML coding
Table 6: with the exemplary embodiment of the XML other MPD files write
Although several embodiments have been provided in the present invention, it should be appreciated that in the feelings for not departing from the spirit or scope of the present invention Under condition, system and method disclosed in this invention can be embodied with many other particular forms.Example of the invention should be regarded To be illustrative and not restrictive, and the present invention is not limited to the details given by Ben Wenben.For example, various elements or component can It can be omitted or do not implement with the combination in another system or merging or certain features.
In addition, without departing from the scope of the invention, description and explanation is discrete or independent in various embodiments Technology, system, subsystem and method can be combined or merge with other systems, module, techniques or methods.It shows or discusses Power mode, mechanical system or other means can also be adopted for discussed as coupled or directly coupled or communication other items by, which stating, passes through certain One interface, equipment or intermediate member are coupled or are communicated indirectly.Other variations, substitution and the example changed can be by this fields Technical staff determines in the case where not departing from spirit herein and disclosed range.

Claims (19)

1. a kind of provide the device of media content characterized by comprising
Processor, for generating media presentation description MPD file, wherein the MPD file is by dependence media content to be allocated Part is assigned at least one and is relied on media content portion, and the MPD file, which shows to work as, meets the dependence media content portion Media content portion will be relied on as described in client device access when the access conditions divided；
Transmitter is operatively coupled to the processor and is used for content server, control server and the client At least one of equipment sends the MPD file；
The each segment for being relied on media content portion and access record are sent to the client device, wherein when from the visitor End equipment received storage access record in family meets the access conditions for relying on media content portion extremely comprising needing to prove When the few one all access for being relied on media content portion records, then allow to rely on matchmaker as described in the client device access Hold part in vivo.
2. the apparatus according to claim 1, which is characterized in that the dependence media content portion and at least one described quilt Relying on each of media content portion all includes at least one segment.
3. the apparatus of claim 2, which is characterized in that the transmitter is also used to send to the content server The dependence media content portion and it is described at least one be relied on media content portion.
4. device according to claim 3, which is characterized in that the access conditions table for relying on media content portion The bright client device accessed it is described at least one be relied on media content portion.
5. device according to claim 3, which is characterized in that the access conditions table for relying on media content portion The bright client device accessed it is described at least one be relied on the predetermined portions of media content portion, and the MPD file At least one is relied on the predetermined portions of media content portion described in specifying.
6. a kind of control server characterized by comprising
Receiver, wherein the receiver is for receiving:
One media presentation description MPD file in content source, content server and client device, wherein described Dependence media content portion to be allocated is assigned at least one and is relied on media content portion, the MPD file by MPD file Show that media will be relied on as described in the client device access when meeting the access conditions for relying on media content portion Content part；
One decision requests in the content server and the client device；
At least one access record from the client device；
Processor is operatively coupled to memory and the receiver, wherein the memory includes non-transient computer The computer executable instructions stored in readable medium, so that the computer executable instructions by the processor when being executed Make the processor after receiving the MPD file, the decision requests and at least one described access record, is based on institute MPD file, the decision requests and at least one described access record are stated to the dependence media content portion whether by described Client device access makes a policy, wherein when full comprising needing to prove from the received storage access record of the client device When at least one of the foot access conditions for relying on media content portion is relied on all access record of media content portion, The decision permission relies on media content portion as described in the client device access.
7. control server according to claim 6, which is characterized in that the memory by the processor when being executed It can also make the processor in rear one into the content server and the client device hair for making the decision Send the decision.
8. control server according to claim 7, which is characterized in that when the MPD file, the decision requests and institute When stating at least one access record and showing to meet the access conditions for relying on media content portion, the decision allow by Media content portion is relied on as described in the client device access；When the MPD file, the decision requests and it is described at least When one access record shows to be unsatisfactory for the access conditions for relying on media content portion, the decision does not allow by institute It states and relies on media content portion described in client device access.
9. control server according to claim 8, which is characterized in that the access for relying on media content portion Condition show the client device accessed it is described at least one be relied on media content portion.
10. control server according to claim 8, which is characterized in that the visit for relying on media content portion The condition of asking show the client device accessed it is described at least one be relied on the predetermined portions of media content portion, and it is described MPD file specify it is described at least one be relied on the predetermined portions of media content portion.
11. a kind of method for controlling the client behavior in adaptive stream media implemented by client device, feature It is, which comprises
Receive media presentation description MPD file, wherein the MPD file by dependence media content portion to be allocated be assigned to Few one is relied on media content portion, and the MPD file shows when the access conditions for meeting the dependence media content portion When will rely on media content portion as described in the client device access；
The connection with content server and control server is established after receiving the MPD file；
The each segment and access record that at least one is relied on media content portion are received from content server；
At least one described each segment for being relied on media content portion of storage is recorded with access；
It is rear to described in control server transmission with the connection of the content server and the control server establishing At least one is relied at least one access record of media content portion.
12. according to the method for claim 11, which is characterized in that the dependence media content portion and it is described at least one Each for being relied on media content portion includes at least one segment.
13. according to the method for claim 12, which is characterized in that the access conditions for relying on media content portion Show the client device accessed it is described at least one be relied on media content portion.
14. according to the method for claim 12, which is characterized in that the access conditions for relying on media content portion Show the client device accessed it is described at least one be relied on the predetermined portions of media content portion, and MPD text Part specify it is described at least one be relied on the predetermined portions of media content portion.
15. according to the method for claim 12, which is characterized in that further include:
Send it is described at least one be relied on the rear to the content of at least one access record described in media content portion Server, which is sent, relies on media content portion request；
It is received in the dependence media from the content server after sending the dependence media content portion request Hold at least one described segment of part.
16. according to the method for claim 12, which is characterized in that further include:
Send it is described at least one be relied at least one access record described in media content portion after receive from institute The decision of control server is stated, wherein whether the decision table is bright allows to rely in media as described in the client device access Hold part；
Receive the decision from the control server it is rear to the content server send the decision and according to Rely media content portion request；
When the decision allows to rely on media content portion as described in the client device access, send the decision and It is received described in the dependence media content portion from content server extremely after the dependence media content portion request A few segment.
17. according to the method for claim 12, which is characterized in that further include:
It is establishing with after the connection of the content server and the control server, Xiang Suoshu content server is sent It is relied on media content portion request；
To after being relied on media content portion request described in content server transmission, receives and come from the content service Device containing it is described at least one be relied on the access record of media content portion it is described at least one be relied on media content One partial each segment.
18. according to the method for claim 12, which is characterized in that further include:
It is establishing with after the connection of the content server and the control server, Xiang Suoshu content server is sent Rely on media content portion request；
After sending the dependence media content portion request, receives the access from the control server and record request；
It sends at least one described at least one access for being relied on media content portion to the control server to record, with sound Answer the access record request；
After sending at least one described access record, the dependence media content portion from the content server is received At least one the described segment divided.
19. according to the method for claim 18, which is characterized in that receive the dependence matchmaker from the content server Holding at least one described segment of part in vivo includes passing through the dynamic self-adapting Streaming Media DASH based on hypertext transfer protocol Receive at least one segment described in the dependence media content portion from the content server.
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